---
license: cc0-1.0
doi: 10.5281/zenodo.23076202
pretty_name: "ANSI X12 Test Data"
tags:
  - test-data
  - synthetic
  - x12
configs:
  - config_name: default
    data_files:
      - split: train
        path: "x12-small.csv"
---

# ANSI X12 Test Data

Structurally complete X12 837P claim documents (ISA, GS, ST, BHT, NM1, CLM, SE, GE, IEA) with varying control numbers. Synthetic claims; not real patients or payers.

Free to use under **CC0-1.0** — public domain dedication, no attribution required.

## Files

- `x12-small.json` / `x12-small.csv` — 100 rows (documents: 25)
- `x12-medium.json` / `x12-medium.csv` — 2,000 rows (documents: 250)
- `x12-large.json` / `x12-large.csv` — 20,000 rows (documents: 2,500)

Deterministic: the same size always produces the same rows.

## Source

Generated by StanzaAPI from <https://stanzaapi.com/datasets/x12>.

## Citation

```
StanzaAPI. (2026). ANSI X12 Test Data. CC0-1.0.
DOI: 10.5281/zenodo.23076202
https://stanzaapi.com/datasets/x12
```

## Security: adversarial corpus

This dataset ships a catalogued **adversarial corpus** of 12 hostile inputs
(injection, XXE, resource exhaustion, encoding attacks, validation bypass, structural confusion,
and prompt injection for AI agents) with the safe expected behaviour. See
[`adversarial/`](adversarial/) or the [hub](https://stanzaapi.com/datasets/adversarial).